you reported earlier how calm this co-pilot seemed as that plane went down. >> reporter: yeah. it is quite remarkable isn't it? it was interesting. i found that one of the key statements the prosecutor spokesperson made was the fact he said yes andreas lubitz had been in si logical consultation and had a sick note. and there was nothing to say he was at this point suicideal and aggressive towards other people soak that appears very significant. the other thing very significant, he did not suffer from any sort of organic illness. that with that he meant a physical illness. one of the things speculated if you remember the "new york times" report he suffered from vision issues there have been german publications indicateing he suffered from a detached